Car bolster and bearing.



No. 7I7,|l4. Ptented Dec. 30, |902,

' J. E. NDRWOUD.

CAR BDLSTER AND BEARING.

(Application led May 27, 1902.)

(nb Model.) 2 shears-sheet l.

i llilllllllll l urii' @mi Imcawa No. 7|7,l|4. Patented Dec. 30, |902.

J. E. NURWUOD.

CAR BOLSTER AND BEARING.

(Application filed May 27, 1902.) I

(No Model.) 2 Sheets$heet 2.

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JNm/ad IIEEED STATES ATENT OFFICE.

BALL BEARING COMPANY, OF BAL OF MARYLAND.

TIMORE, MARYLAND, A CORPORATION CAR BOLSTER AND BEARING.

SPECIFICATION forming part of Letters Patent No. 717,1 14. datedDecember 30, 1902- Applicatiou filed May/"27. 1902.

To all wiz/om, t may concern:

Be it known that I, JOHN E. NORWOOD, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Car Bolsters and Bearings; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit 1o appertains to make and use the same.

This invention relates tolrailway-cars, and more particularly to thetruck and body holsters and their center and side hearings,which sustainthe weight of the car, the object of I5 the invention being to providetruck and body holsters wherein the casings for the balls are formedintegral with the holsters, such casings having such structures,however, as will permit them to he made separate from and zo attached tothe holsters, if desired.

A further object of the invention is to provide a combination, with theholsters and the side hearings, of a form of center-hearing casing whichwill, hy reason of the casings being z5 integral with the holsters,prevent the halls from riding laterally from the race-plates.

An additional object of the invention is to provide center and sidehearings which will he efficient in their actions while sustaining 5oenormous weights and in which the correlative positions of theside-hearing raceplates will he properly maintained.

Other objects and advantages of the invention will he understood fromthe following description.

In the drawings forming a portion of this specification, and in whichlike numerals ot' reference indicate similar parts in the several views,Figure l is a vertical section taken lon- 4o gitudinally through a pairof body and truck holsters constructed and equipped in accordance withthe present invention. Fig. 2 is an enlarged section through theholsters and` including the center hearing. Fig. 3 is a vertical sectiontaken transversely throng-h the ends of the holsters and longitudinallyof one of the hall-passages of a side hearing. Fig.

4: is an enlarged transverse section through a side hearing andincluding portions of the body and truck holsters.

Fig. 5 is a vertical he prevented.

Serial No. 109.155. (No model section through the body and truckholsters at one side of a side hearing.

Referring now to the drawings, there are shown two holsters lO and ll,which are the body and truck holsters, respectively, of the car, theseholsters being each cast integral and having central and side bearingcasings formed upon their lower and upper faces, respectively.

The center hearing comprises the lower cas- 6o ing 70, formed integralwith the truck-bolster and having the central opening 7l to receive theking-holt, said opening being continued through the boss 72, which isformed on the upper face of the casing and centrally thereof. In theupper face of the casing and concentric therewith is formed the annularchannel or seat 73, in which is disposed the lower annular race plate74C, having the spaced transversely arc-shaped grooves 75 7o formed inits upper face and concentric with the boss and the openingtherethrough. Exterior to the channel=73 is a channel 76, which receivesthe dust-excluding packing 77.

On the upper or body holster 10 is cast the 75 upper hearing-casing 78,having a central opening 79 to receive the king-holt and which openingis countersunken at its lower end to receive the boss 72, so that thetwo casings will he held against lateral displacement with 8o respect toeach other, and as the two casings are formed integral with theirrespective holsters lateral displacement, as well as other horizontaldisplacements, of the holsters will In the lower face of the casing 78and concentric therewith is formed the channel or seat 80, whichreceives the upper race-plate 8l, which latter has the spacedtransverselyarc-shaped channels 82 in its lower face and 9o which lieabove the corresponding channels 75 of the race-plate 74 and receive inconnection therewith the bearing-halls 83. Midway between the channels82 is the transverselyrectangular channel 84, in which is engaged theupper edge of a retaining-ring 85, the side faces of which are curvinglyconverged from the lower edge of the ring, so that they may fit partlyunder the halls 83 t0 hold the halls in their respective passages inconnecroo tion with the concaved walls 86 of the lower part of thechannel or groove 80. To hold both the race-plate 81 and theretaining-ring 85 in position, said ring has a narrowed stem 87, or anumber of such stems, which project upwardly from the upper edge of thering and which engage in corresponding alining perforations 88 and 89 inthe bolster and raceplate, respectively. The upper ends of theperforations 88 are countersunken, and the upper ends of the stems areperipherally grooved, so that soft metal may be cast into thecountersinks and will engage the peripheral grooves to preventwithdrawal of the stems.

`Referring now to Fig. 4 of the drawings, the lower or truck bolster hasa bearing-casing 90 cast upon its upper face and in the upper face ofwhich casing is the cross-sectionally arcshaped seat 91, which receivesthe race-plate 92, the under side of which is shaped to correspond tothe seat, so that the race-plate may have a tilting movement in a planeincluding the king-bolt of the truck. In the upper face of therace-plate are formed the three grooves '93, 94, and 95, which areconcentric to the king-bolt, the outside grooves or channels beingtransversely arc-shaped, while the center groove or channel may have adifferent shape, the object of the center channel being to receive themalleable ears 96 at the ends of the casing,which are bent down into thechannel at its ends to prevent displacement of the race-plate inshipment.

The upper bearing-casing is shown at 100 and is formed upon the underface of the body-bolster, this casing including a central straightball-passage with inclined end portions. In the place of a singleportion, however, there are two ball-passages, (shown at 101 and 102,)which are spaced laterally from each other, and for the straightportions of the two passages there is provided a single race-plate 103,having arc-shaped channels 104 and 105 in its under face,whichcorrespond to and aline with the inclined end portions of theirrespective ball-passages. The outer side walls of the ball-passages areintegral with the casing and are concaved to fit part way around theballs, and between the two series of ballsis disposed a retaining-plate106, having concaved side walls which also t part way around the balls.The Iretaining-plate engages in a longitudinal groove in the under sideof the race-plate, midway between the ball-receiving channels of thelatter, and has a stem 107, which is passed through alining perforations108 and 109 in the race-plate and casing, the upper end of theperforations 109 being countersunken and the stem being peripherallygrooved, so that a seal may be cast into the countersink to hold thestem,

- and therewith the wear-plate and spacingplate, to the casing.

With this construction a muchgreater bearing-surface is secured thanwhere a single set of balls is employed, and by mounting the lowerrace-plate to rock the raceplates of the upper and lower members may lieparallel at all times to prevent binding.

What is claimed is- 1. The combination with a body-bolster havingcentral and side bearing casings formed integral therewith of atruck-bolster having central and side bearing casings formed integraltherewith and corresponding to the central and side bearing casings ofthe body-bolster respectively, said casings having race-plates androtatable bodies disposed between the race-plates of the correspondingcasings.

2. The combination with a body-bolster having a casing formed integraltherewith of a truck-bolster having a casing formed integral therewith,race-plates in the casing of the body and truck holsters, and rotatablebearing-bodies in contact with the race-plates and adapted to hold thebolsters in spaced relation.

3. The combination with the body and truck bolsters of casings formedintegral therewith and containing race-plates said casings havingcentral openings to receive a king-bolt the opening of one casing beingcountersunken and the other casing having a boss engaged in thecountersink to hold the casings and bolsters against horizontaldisplacement, and rotatable bearing-bodies in contact with therace-plates.

4. In a roller-bearing for cars, the combination with a casing havingspaced ball-passages therein, of a race-plate common to both passagesand having bearing portions corresponding to the passages, spacing meansbetween the passages and means carried by the spacing means and engagedwith the casing for holding the spacing means and the raceplate againstdisplacement.

5. In a side bearing for cars, the combination with upper and lowerrace-plates, one of which is mounted for rocking movement in a planetransverse to the line of travel on the race-plate, and separate seriesof rotatable bodies disposed between the race-plates and intersectingthe plane of rocking movement of said race-plate.

6. In a side bearing for cars the combination with a race-plate havingspaced parallel races, said plate being mounted to rock in a plane,transverse to the races, of rotatable bodies disposed in the races anda second race-plate disposed to bear upon said bodies.

In testimony whereof I aftix my signature in presence of two witnesses.

JOHN E. NORWOOD.

Witnesses:

Trios. C. BAILEY, SAML. BEALMEAR.

IOO

ITO

